The main power sources for a satellite are
A. batteries
B. solar cells
C. fuel cells
D. thermoelectric generators
58. The maximum height of an ellip

1 Answer

Answer :

B. solar cells

Related questions

Description : Where can I find thermoelectric power generators to augment my solar panels?

Last Answer : Tegpower.com offer good power generators of all sort. Try here and find exactly what your looking for. You may also find them in local power stores are home depoting stores also.

Description : Batteries are used to power all satellite subsystems A. at all times B. only during emergencies C. during eclipse periods D. to give the solar arrays a rest

Last Answer : C. during eclipse periods

Description : Satellite engine uses A. jet propulsion B. ion propulsion system C. liquid fuel D. solar jet

Last Answer : B. ion propulsion system

Description : Satellite engine use A. liquid fuel B. jet propulsion C. ion propulsion system D. solar jet

Last Answer : C. ion propulsion system

Description : What is the data rate in Mbps of a single satellite transponder considering an S/N of 30 dB? A. 35.8 B. 3.58 C. 358 D. 3580

Last Answer : C. 358

Description : Indicate the noise whose sources are in category different from that of the other three? A. Solar noise B. Cosmic noise C. Atmospheric noise D. Galactic noise

Last Answer : C. Atmospheric noise

Description : What is the basic technique used to stabilize a satellite? A. Gravity-forward motion balance B. Spin C. Thruster control D. Solar panel orientation 62. The jet thrusters are usually

Last Answer : B. Spin

Description : What is the height of a satellite in a synchronous equatorial orbit? A. 42000 mi B. 6800 mi C. 22,300 mi D. 35,860 mi

Last Answer : C. 22,300 mi

Description : As the height of a satellite orbit gets lower, the speed of the satellite _________. A. increases B. decreases C. remains the same D. None of the above

Last Answer : A. increases

Description : What height must a satellite be placed above the surface of the earth in order for its rotation to be equal to earth’s rotation? A. 26,426.4 miles B. 27,426.4 miles C. 23,426.4 miles D. 22,426.4 miles

Last Answer : D. 22,426.4 miles

Description : The speed of the satellite increases as its height in orbit gets A. lower B. higher C. closer to the moon D. closer to the sun

Last Answer : A. lower

Description : What is the orbit height of a GPS satellite? A. 10,898 nmi B. 10,898 mi C. 10,898 km D. 10, 898 m

Last Answer : A. 10,898 nmi

Description : The sound power level of a jet plane flying at a height of 1 km is 160 dB. What is the maximum sound pressure level on the ground directly below the plane assuming that the aircraft radiates sound equally in all directions? A. 59.1 dB B. 69.1 dB C. 79.1 dB D. 89.1 dB

Last Answer : D. 89.1 dB

Description : What Is A Thermoelectric Power Generator?

Last Answer : An emergency power outage in your home can be stressful. Power generators work in the event that you lose your home's power. A thermoelectric power generator works by converting heat into energy. Wind ... loss of power at any time of the year. Find a reputable contractor to install you generator.

Description : Is it possible to build a thermoelectric power generator with home tools?

Last Answer : Nextreme eTEG HV Thermoelectric Power Generators are the next generation of high voltage, thinfilm thermoelectric generators developed to address micro-power applications. The Nextreme eTEG HV ... , government and aerospace, thermal batteries, medical implants, and wireless sensor networks.

Description : Where can I get a thermoelectric power generator?

Last Answer : I do believe you can get one of these contraptions at home depot. I would also look in the newspaper often times people buy these machines and don't need them anymore so they sell them rather cheap.

Description : Heat energy is converted into electrical energy a. solar cells b. thermocouples c. electric generators d. none

Last Answer : b. thermocouples

Description : Reading a 58 dBrn, at a +7 test point is equal to ________ dBa0. A. 26 B. 65 C. 51 D. 46

Last Answer : D. 46

Description : Reading a 58 dBrnC on your Western Electric 3A test set at a +7 test point is equal to ______ dBrnc0. A. 58 B. 51 C. 65 D. 27

Last Answer : B. 51

Description : What is the velocity factor for non-foam dielectric 50 or 75 ohm flexible coaxial cable such as RG 8, 11, 58 and 59? A. 2.70 B. 0.66 C. 0.30 D. 0.10

Last Answer : B. 0.66

Description : What is the velocity factor of coaxial cable with a characteristic impedance of 50Ω and capacitance of 30pF/ft and inductance of 75 nH/ft? A. 0.58 B.0.68 C. 0.98 D. 0.81

Last Answer : B.0.68

Description : What is the velocity factor for non-foam dielectric 50 or 75 ohm flexible coaxial cable such as RG 8, 11, 58 and 59? A. 2.70 B. 0.10 C. 0.66 D. 0.30

Last Answer : C. 0.66

Description : What quarterwave transformer will match a 100Ω line to an antenna whose value is 175Ω? A. 132.29 Ω B. 150 Ω C. 16.58 Ω D. 137.5 Ω

Last Answer : A. 132.29 Ω

Description : ECE Board Exam March 1996 One hundred twenty µbars of pressure variation is equal to A. 120 dBSPL B. 115.56 dBSPL C. 41.58 dBSPL D. 57.78 dBSPL

Last Answer : B. 115.56 dBSPL

Description : The main function of a communications satellite is a/ an A. repeater B. reflector C. beacon D. observation platform

Last Answer : A. repeater

Description : The maximum propagation delay of a geostationary satellite is A. 278 ms B. 239 ms C. 300 ms D. 250 ms

Last Answer : A. 278 ms

Description : The maximum height of an elliptical orbit is called the A. Perigee B. Apex C. Zenith D. Apogee

Last Answer : D. Apogee

Description : A radio communications link is to be established via the ionosphere. The maximum virtual height of the layer is 100 km at the midpoint of the path and the critical frequency is 2 MHz. The distance between stations is 600 ... optimum working frequency? A. 6.32 MHz B. 2.1 MHz C. 5.4 MHz D. 1.8 MHz

Last Answer : C. 5.4 MHz

Description : The satellite subsystem that monitors and controls the satellite is the A. propulsion subsystem B. power subsystem C. communications subsystem D. telemetry, tracking, and command subsystem

Last Answer : D. telemetry, tracking, and command subsystem

Description : A satellite batter has more power but lighter. A. Lithium B. Leclanche C. Hydrogen D. Magnesium

Last Answer : A. Lithium

Description : Is a loss of power of a satellite downlink signal due to earth’s atmosphere. A. Atmospheric loss B. Path loss C. Radiation loss D. RFI

Last Answer : B. Path loss

Description : A satellite transmitter operates at 4GHz with an antenna gain of 4dBi. The receiver 40000 km away has an antenna gain of 50 dBi. If the transmitter has a power of 8 W, find (ignoring feedline losses and mismatch) the EIRP in dBW. A. 50 B. 69 C. 49 D. 30

Last Answer : C. 49

Description : A thermoelectric engine which consists of two dissimilar electric conductors connected at two junctions maintained at different temperatures, converts (a) Electric energy into heat energy [IES-2006] (b ... energy (c) Mechanical work into electric energy (d) Electric energy into mechanical work  

Last Answer : (b) Heat energy into electric energy  

Description : Describe the principle of thermoelectric. State thermoelectric materials.

Last Answer : Thermoelectric effect also called as seeback effect. Principle:When two disimilar metals are connected with each other at their ends a thermocouple junction is formed.this thermocouple junction formed ... rhermocouple are (any one) 1)copper-constantan 2)iron -constantan 3)chromel -constantan.

Description : Which of the following is used for thermoelectric cooling? A) Peltier effect B) Seebeck effect C) Both A and B D) None of these

Last Answer : Which of the following is used for thermoelectric cooling? A) Peltier effect B) Seebeck effect C) Both A and B D) None of these

Description : Where can I learn about solar power generators for the home?

Last Answer : The best resource I found was in http://www.solaruniverse.com. They have a dedicated learning center that provides a lot of information on solar power generators, it's benefits and how they work. And if you're prepared to make a purchase, they can help out with building a quote for you.

Description : What solar power generators are there that are the best?

Last Answer : the best advise i can give to you would be to try this website - http://www.mysolarbackup.com/ they seem to be one of the best companies out there with the product you are looking for

Description : What is an advantage of fuel cells over lead storage batteries?

Last Answer : Electrical energy is continuously obtained.

Description : Motors, switches, voltage regulators, generators, etc., are a few examples of emi sources. What type of emi comes from these sources?

Last Answer : Man-made.

Description : Which of the following non-conventional sources of energy holds out the maximum promise in India? (a) Solar Energy (b) Geothermal Energy (c) Tidal Energy (d) Wind Energy

Last Answer : Ans: (a)

Description : What is the source of electric energy in an artificial satellite? (a) A mini nuclear reactor (b) A dynamo (c) A thermopile (d) Solar cells

Last Answer : Ans:(d)

Description : The maximum emission of pollutants from fuel sources in India is caused by : (A) Coal (B) Firewood (C) Refuse burning (D) Vegetable waste product

Last Answer : Answer: B  As many as 115,000 people die in India each year from coal-fired power plant po llution, costing the country about $4.6 billion, according to a groundbreaking new study released ... generation in India and its usage is continuously increasing to meet the energy demands of the country.

Description : Sources of impulse noise induced in communication channels. A. Erroneous digital coding bit caused by an error on a transmission facility B. Transients due to relay operation C. Crosstalk from dc signaling systems D. All of these

Last Answer : D. All of these

Description : Name one or more sources of noise bearing on electronic communications. A. Steam boiler B. Galaxies C. Internal combustion engine D. Both B and C

Last Answer : D. Both B and C

Description : What happens when the common terminal of V+ and V- sources is not grounded?

Last Answer : If the common point of the two supplies is not grounded, twice the supply voltage will get applied and it may damage the op-amp

Description : Justify the reasons for using current sources in integrated circuits.

Last Answer : (i) Superior insensitivity of circuit performance to power supply variations and temperature.  (ii) More economical than resistors in terms of die area required to provide bias currents of ... the high incremental resistance of current source results in high voltage gain at low supply voltages.

Description : What are the applications of current sources?

Last Answer : Transistor current sources are widely used in analog ICs both as biasing elements and as load devices for amplifier stages.

Description : What is the base of a triangle with the area of 58.5 and height of 9?

Last Answer : The base of the triangle is 13 units because 0.5*13*9 = 58.5square units

Description : What is the base of a triangle with the area of 58.5 and height of 9?

Last Answer : The base of the triangle is 13 units because 0.5*13*9 = 58.5square units

Description : What is a normal blood sugar level for a 76 year old woman weight 175 height 5'8"?

Last Answer : What is a normal blood sugar level for a 75 year old woman weight 175 height 5'8"?